Improvement in removable trays for sewer-traps



2 Sheets-Sheet 1.l

E. D. CULVER. O RemovableTrrays for Sewer-Traps. No.l53,425`.

Patented July 28,1874.

Ina/en 251':

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a Removable Trays for Sewer-Traps.

N0.l53,425, Patentedjuly2a,*1s74. I

UNITED STATES PATENT OFFICE.

EPHRAIM D. CULVER, 0F SOUTH AMBOY, NEW JERSEY.

IMPROVEMENT IN REMOVABLE TRAYS FOR SEWER-TRAPS.

Specification forming part of Letters Patent No. 153,425., dated Julyr28, 1874; application tiled May 25, 1874.

To all whom it may concern:

Be it known that I, EPHRAIM D. CULvEE, of South Amboy, in the county ofMiddlesex and State of New Jersey, have invented anew and usefulImprovement in Removable Trays for Sewer-Traps, of which the followingis a specification:

This invention is an improvement in an invention for a similar purposefor which a patent was allowed me 011 the 16th day of December, 1872.The improvement herein made consists in providing the said tray withadjustable throat-pieces, and also in an improved construction of thediaphragm which divides the interior of the trayinto two compartments.The nature of the invention will be more readily understood by referenceto the accompanying drawings.

A Figure l is a plan view of the improved tray. Fig. Il is a transversesectional view through line :1; Fig. I. Fig. lll is a frontelevationview. Fig. lV is a bottom plan.

The tray is to be built of metal, and has four sides, A A1 A2 A3, whichare to be strongly riveted or otherwise fastened together. To the lowerend of one ot' these side pieces a bottom, B, is to be hinged, and thesaid bottom is to be scoured in its closed position by a latch, b, whichis arranged to cross the bottom and engage the catches a of the sideplates in suoli a manner as to hold up the bottom to the said sideplates, even when the tray is filled with solid dirt, which will thenrest on the bottom, which rests on its hinges b and the aforesaid latchl). The side A3 is somewhat shorter than the other three sides, so as toallow an overiiow on that side for the water to flow from the tray offinto the sewer.

The interior of the tray is divided into two,

compartments, al a2, by the perforated diaphragm (l and the grating cabove it. To the tops of the side pieces A1 and A2 there are hingedthroat-pieces D, which maybe thrown back in the position shown in dottedlines in Fig. Ill, so as to wholly close up the cavity of the basin whenthe tray is in position therein; or the said throat-pieces may be thrownup in vertical position over their respective side pieces, as in fulllines in the same figure, when the tray is to be lowered or hoisted fromits seat in the catch-basin. A guard-piece, E, is also hinged to theside pieces Al A2, to form a guide or rest for the aforesaidthroat-pieces when they are thrown up. This may be thrown back, asin thedotted lines in Fig. Il, when the tray is down. There are hooks Hsecurely alixed to the top ends of the side plates, by which the tray isto be lowered into or hoisted from its position in the catch-basin. Whenhoisted up over a cart, or other proper place to empty it, the latchwill be withdrawn from the catches a, when the bottom will iiy open andpermit the contents to drop down into the proper receptacle for them,when the tray may be replaced in its position in the basin, the bottomdoor having been tirst closed again.

AThe water, on entering the basin, will lirst fall into chamber al,-where a large part of the solid matter will be deposited, and then willow through the perforated diaphragm into chamber c2, the diaphragmacting to retard the passage of the solid matter and aiding to precipateit upon the bottom. The grating c above the-diaphragm C is curved overtoward chamber c1, and holds within it any light material that wouldiloat upon the surface of the water. A second grating-,1, somewhat linerthan c, isI placed over the overflow side A3, so as to retain in chamberc2 any light material that might pass through c.

Having thus described my invention, I desire to claim- A sewer-trap, AAl A2 A3, having a hinged bottom, B, dividing diaphragm C, with its topgrating c, and adjustable throat-pieces D, and guardpiece E, all'arranged and constructed as herein shown and described, and for thepurpose set forth.

This specifica-tion signed this 14th day of May, 1.874..

E. D. OULVER. Witnesses:

ANTON C. GRONDAI., FRANKLIN BAERITT.

